/*
 * Funambol is a mobile platform developed by Funambol, Inc.
 * Copyright (C) 2008 Funambol, Inc.
 *
 * This program is free software; you can redistribute it and/or modify it under
 * the terms of the GNU Affero General Public License version 3 as published by
 * the Free Software Foundation with the addition of the following permission
 * added to Section 15 as permitted in Section 7(a): FOR ANY PART OF THE COVERED
 * WORK IN WHICH THE COPYRIGHT IS OWNED BY FUNAMBOL, FUNAMBOL DISCLAIMS THE
 * WARRANTY OF NON INFRINGEMENT  OF THIRD PARTY RIGHTS.
 *
 * This program is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
 * FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
 * details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program; if not, see http://www.gnu.org/licenses or write to
 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
 * MA 02110-1301 USA.
 *
 * You can contact Funambol, Inc. headquarters at 643 Bair Island Road, Suite
 * 305, Redwood City, CA 94063, USA, or at email address info@funambol.com.
 *
 * The interactive user interfaces in modified source and object code versions
 * of this program must display Appropriate Legal Notices, as required under
 * Section 5 of the GNU Affero General Public License version 3.
 *
 * In accordance with Section 7(b) of the GNU Affero General Public License
 * version 3, these Appropriate Legal Notices must retain the display of the
 * "Powered by Funambol" logo. If the display of the logo is not reasonably
 * feasible for technical reasons, the Appropriate Legal Notices must display
 * the words "Powered by Funambol".
 */
#import <QuartzCore/QuartzCore.h>
#import "TransitionView.h"

#define kAnimationKey @"transitionViewAnimation"


@implementation TransitionView

//@synthesize delegate, transitioning;


// Method to replace a given subview with another using a specified transition type, direction, and duration
- (void)replaceSubview:(UIView *)oldView withSubview:(UIView *)newView transition:(NSString *)transition direction:(NSString *)direction duration:(NSTimeInterval)duration {
	
	// If a transition is in progress, do nothing
	if(transitioning)
		return;
	
	
	NSArray *subViews = [self subviews];
	NSUInteger index;
	
	if ([oldView superview] == self) {
		// Find the index of oldView so that we can insert newView at the same place
		for(index = 0; [subViews objectAtIndex:index] != oldView; ++index) {}
		[oldView removeFromSuperview];
	}
	
	// If there's a new view and it doesn't already have a superview, insert it where the old view was
	if (newView && ([newView superview] == nil))
		[self insertSubview:newView atIndex:index];
	
	
	// Set up the animation
	CATransition *animation = [CATransition animation];
	[animation setDelegate:self];
	
	// Set the type and if appropriate direction of the transition, 
	if (transition == kCATransitionFade) {
		[animation setType:kCATransitionFade];
	} else {
		[animation setType:transition];
		[animation setSubtype:direction];
	}
	
	// Set the duration and timing function of the transtion -- duration is passed in as a parameter, use ease in/ease out as the timing function
	[animation setDuration:duration];
	[animation setTimingFunction:[CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseInEaseOut]];
	
	[[self layer] addAnimation:animation forKey:kAnimationKey];
}


// Not used in this example, but may be useful in your own project
- (void)cancelTransition {
	// Remove the animation -- cleanup performed in animationDidStop:finished:
	[[self layer] removeAnimationForKey:kAnimationKey];
}

@end
